Hi Guys/Girls, Any of you had your SMTP connection drop? - for us it happens normally once a day at no particular time, for about 5mins, comes back up and carries on running till the next day. Line supplier claims its not them, web filtering claims its not them as we can telnet to the clusters. Has been happening fo rmonths and just can't pin it down to anything. Normal logs reporting nothing, eventvwr nothing - System Centre Operations Manager is not seeing it happen Any ideas? diagnostic software? Drained of ideas and need some help cheers